Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Au'au Channel

Larned – Residency

25th sighting in Au'au Channel
Fluke of Larned
Larned Confirmed in the catalog @13078
Mar 6 – 26, 2026 · Au'au Channel

Bright Water, Long Habit

Twenty winters deep and this channel still lights up shallow and warm.

76 m
Deepest dive
3:11
Longest dive
21
Dives
Sightings
3
Days between first and last sighting
20

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Mar 6, 2026-20 m24.8°C—
Mar 25, 202695 m24.6°C76 m
Mar 26, 202618 m24.4°C16 m

Seafloor and sea temperature measured · ✳ dives modelled

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Deepest dive against the seafloor, per sighting

Seafloor · measured Deepest dive · modelled
Mar 6, 2026 — seafloor -20 m (measured), deepest dive — (modelled)Mar 6Mar 25, 2026 — seafloor 95 m (measured), deepest dive 76 m (modelled)Mar 25Mar 26, 2026 — seafloor 18 m (measured), deepest dive 16 m (modelled)Mar 26

Depth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.

Dives

76 m
Deepest dive
3:11
Longest dive
21
Dives
15 m
Avg dive depth
3
Sightings
20
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010076 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (95 m) and the published dive-behaviour distribution. Modelled, not measured.

Deep Effort Score

Deep

Depth, duration and recovery resolved into a single number for this session.

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Place

Where this happened · Mar 25, 2026

measured
Seafloor depth
95 m
Sea-surface temperature
24.6°C
Distance from shore
7.0 km

Across the residency · 3 sightings

measured
Seafloor depth
-20 m – 95 m
Sea-surface temperature
24.4°C – 24.8°C
Distance from shore
2.0 km – 7.0 km

Sources: GEBCO seafloor grid · NOAA OISST sea temperature · PacIOOS coastline distance

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Source records

This activity is assembled from 3 catalogued encounters on Happywhale.

Sighting records from Happywhale, published as occurrence data via GBIF. Individual records are licensed CC0 1.0, CC BY 4.0 or CC BY-NC 4.0, depending on the contributor.

The photographs and fluke identifications behind every sighting are the work of the contributing observers — the citizen scientists, naturalists and operators who logged them, each named in the underlying GBIF occurrence record. Every activity links out to its source encounters on Happywhale. Basemaps © OpenStreetMap contributors (ODbL).

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Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.